Wallpaper author:
John Buonomo
01 Nov 2025
Messier 81 HaLRGB
Messier 81 (also known as NGC 3031 or Bode's Galaxy) is a grand design spiral galaxy about 12 million light-years away in the constellation Ursa Major. It has a D25 isophotal diameter of 29.44 kiloparsecs (96,000 light-years). - Wiki
Dataset from which the image was processed
M81
20 credit
- Type of target............................................................................................................................Galaxy
- Camera............................................................................................................................FLI Proline PL16803
- Target coordinates............................................................................................................................RA 148.8883 Dec 69.0653
- Hemisphere............................................................................................................................Northern
- Telescope location............................................................................................................................United States of America
- Transient event............................................................................................................................No
- Observed on............................................................................................................................02 Feb 2022 - 08 Mar 2022
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Luminance | 1705 | 9h | 19 |
| Red | 758 | 4h | 19 |
| Green | 758 | 4h | 19 |
| Blue | 800 | 4h | 18 |
| Halpha | 1800 | 9h | 18 |